revrev points us to a Juicy Lucy out in Burbank, California. Based on his review of the Lucy at hambur.gr, it sounds like they’re still working out the details:
It wasn’t necessarily bad, it just wasn’t good. The American cheese inside is, of course, the whole point of the Juicy Lucy, but it really just tasted artificial. They did manage to cook my burger rare, which I’m always pleased with, but the rest of the sandwich was just your average food-service buns and unripe sliced tomatoes.
One way to solve the unripe tomatoes issue is to leave them off the burger.
It’s good to hear that the Lucy love is spreading.